Section 4. Maintenance, Troubleshooting, and SchematicsE. Check the cable(s) between the serial port and the modem. If cables havenot been purchased through Campbell Scientific, check for the followingconfiguration using an ohm meter:25-pin serial port:computer end modem end2 23 37 720 209-pin serial port:computer end modem end2 33 24 205 7F. Make sure the communication device at the computer is properlyconfigured and cabled (Section 2.5).G. Call Campbell Scientific if still no response.4.2.3 NAN or ±INF Displayed in a VariableA. Make sure the battery voltage is between 9.6 and 16 VDC.B. Verify sensors are plugged into the correct sensor connector and thelocking ring is securely in place (see Figure 2.4-18). Check connectors forany corrosion on pins.C. If Short Cut or VisualWeather is used to create the station program doublecheck the wiring diagram to see if it matches the physical wiring on thesensor connectors on the back of the enclosure.If CRBasic is used to create the station program verify channelassignments and multipliers.4.2.4 Unreasonable Results Displayed in a VariableA. Inspect the sensor for damage and/or contamination.B. Make sure the sensor is plugged into the correct sensor connector on theback of the enclosure.C. If Short Cut or VisualWeather is used to create the station program doublecheck the wiring diagram to see if it matches the physical wiring on thesensor connectors on the back of the enclosure.If CRBasic is used to create the station program verify channelassignments and multipliers. Datalogger program may need to be changed.4-7
